CN202131116U - Equipment for producing calcium chloride containing impurity liquid by using wastewater - Google Patents
Equipment for producing calcium chloride containing impurity liquid by using wastewater Download PDFInfo
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- CN202131116U CN202131116U CN201120200460U CN201120200460U CN202131116U CN 202131116 U CN202131116 U CN 202131116U CN 201120200460 U CN201120200460 U CN 201120200460U CN 201120200460 U CN201120200460 U CN 201120200460U CN 202131116 U CN202131116 U CN 202131116U
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- pipeline
- inlet
- tank
- neutralization tank
- calcium chloride
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- 239000002351 wastewater Substances 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 title claims abstract description 23
- 239000001110 calcium chloride Substances 0.000 title claims abstract description 21
- 229910001628 calcium chloride Inorganic materials 0.000 title claims abstract description 21
- 239000012535 impurity Substances 0.000 title abstract description 3
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 210000000481 breast Anatomy 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 235000021110 pickles Nutrition 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 238000005304 joining Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 abstract description 25
- 238000005554 pickling Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000008267 milk Substances 0.000 abstract description 5
- 210000004080 milk Anatomy 0.000 abstract description 5
- 235000013336 milk Nutrition 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 35
- 239000002893 slag Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000005097 cold rolling Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 9
- 235000011116 calcium hydroxide Nutrition 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000012747 synergistic agent Substances 0.000 description 2
- 101100232929 Caenorhabditis elegans pat-4 gene Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241001465977 Coccoidea Species 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 240000006909 Tilia x europaea Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 229940045511 barium chloride Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000005452 food preservative Substances 0.000 description 1
- 235000019249 food preservative Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The utility model discloses a device for producing calcium chloride containing impurity liquid by using waste water, which comprises a waste water tank (1), a pipeline (3), a neutralization tank (4), a storage bin (5), a screw feeder (6), an electronic scale (7), a milk preparation tank (8), an acid pickling waste liquid tank (9) and an inclined plate sedimentation tank (10), wherein the water outlet of the waste water tank (1) is connected with the inlet of the neutralization tank (4) through the pipeline (3); the other water outlet of the wastewater pool (1) is connected with the inlet of the milk preparing tank (8) through a pipeline (3); a discharge opening of the bin (5) is connected with a feed opening of the feeder (6), a discharge opening of the feeder (6) is connected with a feed opening of the electronic scale (7), and a discharge opening of the electronic scale (7) is connected with an inlet of the milk preparing tank (8); the outlet of the milk preparation tank (8) is connected with the inlet of the neutralization tank (4) through a pipeline (3); the outlet of the pickling waste liquid tank (9) is connected with the inlet of the neutralization tank (4) through a pipeline (3); the outlet of the neutralization tank (4) is connected with the inlet of the inclined plate sedimentation tank (10) through a pipeline (3). The pipeline is provided with a plurality of valves (2).
Description
Technical field
The utility model belongs to the water reuse apparatus field, relates in particular to a kind of cold rolling acid-bearing wastewater to be carried out the equipment that modification and recycling production contain assorted liquid calcium chloride.
Background technology
Iron and steel enterprise is with the iron scale of chlorohydric acid pickling belt steel surface, and the band steel after the pickling is remaining hydrochloric acid of water flushing surface of steel plate and oxide compound again, produces a large amount of acid-bearing wastewaters.The pH value of acid-bearing wastewater is generally 1～3, also contains environmentally harmful cl ions and COD in the acid-bearing wastewater.Therefore, a large amount of cold rolling acid-bearing wastewaters must pass through processing and just can efflux, and generally adopts at present in acid-bearing wastewater, to add the processing of milk of lime neutral method, and the pH value of the waste water after the processing reaches 6～9, is discharged to sewage work and carries out advanced treatment.The problem that prior art exists: because acid-bearing wastewater, often occurs that the pH value exceeds standard or ss suspended solid exceeds standard through adding the control of alkali neutralizing treatment situation has a strong impact on next procedure and normally moves; Through the waste water after the neutralizing treatment, environmentally harmful cl ions and COD still exceed standard, and are 2110mg/L like cl ions in certain large-scale cold rolling acid-bearing wastewater, COD
CrBe 462.3mg/L, COD in the new national Specification efflux wastewater of announcing in 2009
CrBe lower than 100mg/L, objectionable impuritiess such as cl ions and COD exceed standard to efflux to area ecological environment and cause very big harm, and every year also will be paid the effluent charge of considerable number by enterprise.Existing cold rolling acid-bearing wastewater treatment technology exists cost high, can not realize that stably reaching standard effluxes, and does not more make waste water resource obtain utilizing, and it is an environmental protection difficult problem that troubles iron and steel enterprise that cold rolling wastewater is handled always.
Cold rolling mill produces a large amount of spent pickle liquors with the iron scale on acid pickling steel plate with hydrochloric acid surface, and its staple is hydrochloric acid, FeCl
2, FeCl
3And water, a large amount of spent pickle liquors generally adopts the Shandong to grow nanofarad and handles, and reclaiming hydrochloric acid also produces the red iron oxide sub product.The shortcoming that nanofarad is grown in the Shandong is that facility investment is big, energy consumption is high; Do not have the enterprise that nanofarad is grown in the Shandong on the condition, generally handle spent pickle liquor with adding alkali neutral method.
In addition, produce a large amount of high dedusting ash of CaO content in iron and steel enterprise's production process, reach 50.2% like the LF stove dedusting ash CaO content of certain steelworks; MgO is 11.6%; These materials have and recycle to be worth very much, but because of sulphur content in the LF stove dedusting ash up to 0.712%, will cause back sulphur as the Iron and Steel Production raw material again; Present this dedusting ash effluxes, and gives the environment build-up of pressure and causes resource loss.
Also have, produce a large amount of carbide slag slurries in the calcium carbide production process, moisture percentage is about 60% after the slag slurry natural subsidence, if do not handle the just discharging serious environment pollution that is bound to.Carbide slag slurries obtains the carbide slag siccative through behind the natural air drying, and is following like certain carbide slag siccative composition: Ca (OH)
2: 67.66%, CaCO
3: 20.01%, H
2O:2.49%, other: 9.84%.The CaO content of this carbide slag siccative is 62.41% after the thermolysis.
On the other hand; Calcium chloride is widely used as siccative, textile sizing agent and fireproofing agent, road surface dust-collecting agent, food preservatives, refrigeration agent, harbour and airport and synergistic agent, aluminum chloride and the bariumchloride of road surface antifogging agent, dyestuff grinding aid, snow-melting agent, water purification agent, agglomerate and pellet and the raw material of calcium salt etc. as a kind of important chemical material, and use range is wide, demand is big.The calcium chloride product both can be solid, also can make liquid; In fact; A lot of calcium chloride products do not need very high purity; Like the synergistic agent of road surface dust-collecting agent, harbour and airport and road surface antifogging agent, agglomerate and pellet etc., these products are not calculated mostly with the higher calcium chloride product preparation of purity economically.
The working method of traditional liquid calcium chloride is to utilize solvay soda process to produce the waste liquid production of soda ash or with hydrochloric acid and lime carbonate or the production of Wingdale method.
Application number is 91106411.7 Chinese patent; " a kind of method of producing liquid calcium chloride " adopts hydrochloric acid to add calcium carbonate reaction and generates liquid calcium chloride, it is characterized in that: under stirring at a slow speed; Hydrochloric acid with excessive 5%～15% and the reaction of Wingdale ore pulp; Removing carbon dioxide under negative pressure, using milk of lime to be neutralized to the pH value to reaction solution is 5～8, and adds ZX-I and handle.Reduce though this method is produced the quantity of slag, quality product is better, has the technology relative complex, and speed of response is uncontrollable, needs impurity screening, energy consumption height, and the gas that generates in the reaction process needs problems such as harmless treatment.This patent has also been introduced U.S. Pat 4; 299; 809, adopt hydrochloric acid to add calcium carbonate reaction and generate liquid calcium chloride, it is characterized in that: be that reactor drum is filtration unit is arranged at top seal, bottom acidproof a jar; Granularity is the lime carbonate of 0.1mm～30mm and the hydrochloric acid reaction that top adds, and the carbonic acid gas that produces by reaction makes liquid calcium chloride filter and isolate carbonic acid gas.Its advantage is not need power, and shortcoming is that device structure is complicated, and cost is high, and lime carbonate is excessive, produces a large amount of slags, needs complicated method for subsequent processing to improve the quality of products.
Application number is 200810015605.2 Chinese patent; " a kind of method of utilizing industrial waste acid to produce liquid calcium chloride "; It is characterized in that; Utilize the abraum salt acid behind block Wingdale and the strip pickling to react by a certain percentage, the acid chlorization calcium solution that generates is neutralized with milk of lime, reacted gas absorbs through cuvette.The advantage of this method is to have utilized abraum salt acid, controlled, the reacted gas of speed of response behind the strip pickling to obtain handling, and shortcoming is 3～4 days a precipitation process of the thick liquid needs of the calcium chloride behind the abraum salt acid-respons behind block Wingdale and the strip pickling, the production cycle is long, cost is higher relatively.
The utility model content
In order to overcome the shortcoming of prior art, the utility model technical problem to be solved provides a kind of cold rolling acid-bearing wastewater production that utilizes simple in structure, that the product quantity of slag is few and cost is low and contains the device of assorted liquid calcium chloride.
The utility model is achieved through following technical scheme:
A kind of equipment that utilizes waste water production to contain assorted liquid calcium chloride; Comprise wastewater disposal basin, valve, pipeline, neutralization tank, feed bin, screw feeder, electronic scales, join breast jar, spent pickle liquor jar and inclined-plate clarifying basin, the wastewater disposal basin water outlet links to each other with the waterwater entrance of neutralization tank through pipeline; Another water outlet of wastewater disposal basin links to each other with the waterwater entrance of joining the breast jar through pipeline; The discharge opening of feed bin links to each other with the material inlet of feeding machine, and the discharge port of feeding machine links to each other with the electronic scales material inlet, the electronic scales discharge port with join the breast jar the inlet link to each other; Joining breast jar outlet links to each other with the neutralization tank inlet through pipeline; The outlet of spent pickle liquor jar links to each other with the neutralization tank inlet through pipeline; The neutralization tank outlet links to each other with the inclined-plate clarifying basin inlet through pipeline.
Said wastewater disposal basin is used to store cold rolling acid-bearing wastewater, and waste water injects neutralization tank and joins the breast jar through valve through the pipeline injection through pipeline through valve respectively; Said feed bin is used to store dedusting ash (carbide slag), and dedusting ash (carbide slag) is joined the breast jar through screw feeder and electronic scales adding; Said acid washing rolled steel waste liquid tank is used to store acid washing rolled steel waste liquid (regeneration hydrochloric acid), and spent pickle liquor (regeneration hydrochloric acid) injects neutralization tank through valve and pipeline; The said breast jar of joining is used for dedusting ash (carbide slag), cold rolling acid-bearing wastewater preparing lime milk; Said neutralization tank is used for milk of lime, acid washing rolled steel waste liquid (regeneration hydrochloric acid), the acid-bearing wastewater reaction generates containing of desired concn of assorted CaCl
2Solution; The CaCl that generates
2Waste water solution injects inclined-plate clarifying basin through valve through pipeline; Said inclined-plate clarifying basin is used to clarify the reacted mixture solution that contains of neutralization tank, and supernatant promptly contains assorted calcium chloride solution and is used for recycling, said sloping plate deposition recycling after press filtration obtains mud cake.
Beneficial effect is following: cold rolling acid-bearing wastewater, LF stove dedusting ash or carbide slag that sulphur content is high are got utilization; 2, save a large amount of cold rolling acid-bearing wastewater processing costss; 3, produce the useful assorted calcium chloride solution product that contains; 4, avoid of the pollution of cold rolling acid-bearing wastewater to environment; 5, avoid the high LF stove dedusting ash of sulphur content to efflux pollution to environment; 6, production process continuous controllable need not special-purpose carbon dioxide recovering apparatus.
Description of drawings
Fig. 1 utilizes waste water production to contain the apparatus and process schema of assorted liquid calcium chloride;
Wherein, 1 wastewater disposal basin, 2 valves, 3 pipelines, 4 neutralization tanks, 5 feed bins, 6 feeding machines, 7 electronic scaless, 8 are joined breast jar, 9 spent pickle liquor jars, 10 inclined-plate clarifying basins.
Embodiment
Be described further below in conjunction with the embodiment of accompanying drawing the utility model:
As shown in Figure 1:
The connection situation of entire equipment is described below: wastewater disposal basin 1 water outlet links to each other through the waterwater entrance of pipeline 3 with neutralization tank 4 through valve 2; Wastewater disposal basin 1 another water outlet links to each other with the waterwater entrance of joining breast jar 8 through pipeline 3 through valve 2; Dedusting ash (carbide slag) discharge opening of dedusting ash (carbide slag) feed bin 5 links to each other with the material inlet of screw feeder 6, and the discharge port of screw feeder 6 links to each other with electronic scales 7 material inlets, and electronic scales 7 discharge ports link to each other with dedusting ash (carbide slag) inlet of joining breast jar 8; Joining breast jar 8 milk of limes outlet links to each other with neutralization tank 4 milk of limes inlet with pipeline 3 through valve 2; Spent pickle liquor (regeneration hydrochloric acid) outlet of spent pickle liquor (regeneration hydrochloric acid) jar 9 links to each other with neutralization tank 4 spent pickle liquors (regeneration hydrochloric acid) inlet with pipeline 3 through valve 2; Neutralization tank 4 reacting product outlets link to each other with inclined-plate clarifying basin 10 inlets with pipeline 3 through valve 2.
Dedusting ash (carbide slag) in waste water in the wastewater disposal basin 1, dedusting ash (carbide slag) feed bin 5 added respectively to join in the breast jars 8 process milk of lime; Again spent pickle liquor (regeneration hydrochloric acid) in spent pickle liquor (regeneration hydrochloric acid) jar 9 and milk of lime are added neutralization tank 4; Product after the neutralization is through inclined-plate clarifying basin 10 depositions; Supernatant is and contains assorted liquid calcium chloride, the mud that inclined-plate clarifying basin 10 precipitates recycling after press filtration.
Claims (2)
1. equipment that utilizes waste water production to contain assorted liquid calcium chloride; Comprise wastewater disposal basin (1), pipeline (3), neutralization tank (4), feed bin (5), screw feeder (6), electronic scales (7), join breast jar (8), spent pickle liquor jar (9) and inclined-plate clarifying basin (10), wastewater disposal basin (1) water outlet links to each other with neutralization tank (4) inlet through pipeline (3); Another water outlet of wastewater disposal basin (1) through through pipeline (3) with join breast jar (8) inlet and link to each other; The discharge opening of feed bin (5) links to each other with the material inlet of feeding machine (6), and the discharge port of feeding machine (6) links to each other with electronic scales (7) material inlet, electronic scales (7) discharge port with join breast jar (8) inlet and link to each other; Joining breast jar (8) outlet links to each other with neutralization tank (4) inlet through pipeline (3); Spent pickle liquor jar (9) outlet links to each other with neutralization tank (4) inlet through pipeline (3); Neutralization tank (4) outlet links to each other with inclined-plate clarifying basin (10) inlet through pipeline (3).
2. the equipment that utilizes waste water production to contain assorted liquid calcium chloride according to claim 1, it is characterized in that: described pipeline is provided with several valves (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120200460U CN202131116U (en) | 2011-06-14 | 2011-06-14 | Equipment for producing calcium chloride containing impurity liquid by using wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120200460U CN202131116U (en) | 2011-06-14 | 2011-06-14 | Equipment for producing calcium chloride containing impurity liquid by using wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131116U true CN202131116U (en) | 2012-02-01 |
Family
ID=45519893
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120200460U Expired - Fee Related CN202131116U (en) | 2011-06-14 | 2011-06-14 | Equipment for producing calcium chloride containing impurity liquid by using wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202131116U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588323A (en) * | 2013-11-15 | 2014-02-19 | 湖南华菱湘潭钢铁有限公司 | Method for recycling sintering desulfurization waste liquid |
| CN105439343A (en) * | 2014-09-02 | 2016-03-30 | 天津市天利达环保科技有限公司 | Acid and alkali waste recycling technology |
| CN110143607A (en) * | 2019-05-08 | 2019-08-20 | 鲁西化工集团股份有限公司 | A technique for calcium chloride is prepared using waste pulp |
-
2011
- 2011-06-14 CN CN201120200460U patent/CN202131116U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588323A (en) * | 2013-11-15 | 2014-02-19 | 湖南华菱湘潭钢铁有限公司 | Method for recycling sintering desulfurization waste liquid |
| CN105439343A (en) * | 2014-09-02 | 2016-03-30 | 天津市天利达环保科技有限公司 | Acid and alkali waste recycling technology |
| CN105439343B (en) * | 2014-09-02 | 2018-08-03 | 天津市天利达环保科技有限公司 | A kind of soda acid changing rejected material to useful resource treatment process |
| CN110143607A (en) * | 2019-05-08 | 2019-08-20 | 鲁西化工集团股份有限公司 | A technique for calcium chloride is prepared using waste pulp |
| CN110143607B (en) * | 2019-05-08 | 2021-10-22 | 鲁西化工集团股份有限公司 | Technology for preparing calcium chloride by using waste slurry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20170614 |